Secondary battery



. Ifo. m

Pahented Sept. 5, I922.

LUNITED s re-T555 l jf A'l-ifE 'NT" omen Gannon meme eeohon wQ 2 1m 'oifrmenj e VA'HIA.

BEGONDAEY BATTERY.

To ithwg 06mm ordinn1'y construction 15 sale Be it known thatwe, 'Gb'onon'iW; Prim Sr. and GnoimwWI P Jr. f o .the United States,

detaining in-the eounfiyof Phili, elphlnj 'and' S of Pennsylvu-mo, have-invented oeron'dnr'y Batteries, of \uh ehthe follox'yingils teries, and more particxilifly to v theeleo 1 trodes of suohhatfieries; 4

An object of m invention isto'j reduce a. battery which. wall withstand mu I-treiibment witheminihi of loss;v of-geti ma,- terial from the elect-rodeo Another object 15 to produce an electrode for suoh. betteries'tliat will oherge end dis-- oh e more ra' idl than us 'oilstomeiry, wifi ut debexiorfioxz Another object is to prod-ode mey'be converted into either a jositive "or a nzfietive electrode, b the formJng-"pr'oeess, a be hly dumb e in either condition. Othelo "eotewill appiaeru'oureading the specification. i I I The electrodes are made as follo'ws': A modernetandu-d. type of ad of ({my a an onto, described below, is bhoroughl worked mtoitpreferably by hand labor. he paste.

is m e as followe:-

Yellow accumulator oxide (litharlfieln- 60 1e. 0 76 lbs. Red ecoum a. r oxide" red lead) 40 lbs. to n.

" Ta powder'. 5 lbs; to 10 lbs.-

The above powders g ug r ie I tumbling meohine,'unifo1 m1t m .011 being essential. A ualit ty of the whims, about one hun md pounds, is now glut on 11. glass or other acid proof plate and oped into e-rinig,"into the center of e which is then poured slow! tlfixty five bun-- dred cubic eentimebere to ur thousand "eubie centimeters of unified granular emmonium.su1phn.teao utlon, of specifio grew it) 1.100 be 1.140, the two thoroughly mth .a wood paddle. After standing for about five minutes, or long enough so (hot the mixture does not'become shooked, (in

' other words, after. standing forabout five minutes the chemicalaotion that takes revenis-subeequegt digintegl ation of set 'ragPhilaa' T e finishe vbew rorkecl into the *iri dielsillod mm, mm 1 ovity 951.100 to. 1.1- 4;0." The ution: Quid. be oover'ed fio prom 1151mm. dust;

before using:

o of the d humafinfift to drygor a. peri the user

. Application menace, IBZIE- B'ulal Im-HGMS.

so} hate solution, 'msldng'leeuen thousand in (led; ihd thorou yiuoorpombed inllahe The ammonium efiheoeeolution ie-nmde by. dmol'qing is known jflithe txade 0,3 ammomum mll'phete, mnulot. purified" reaches a ific "eto, ond'hllowed to'stand gt le'dt ten hour's sugpo consist otf'a; woo -ibl ock"upo1i wlgmhis a beveled my glessjlate the-gimp per, amyew, the fabric 1) s'ttetolied tly-and secuped email-sides 'tlie wood end obrnazemjthihgthe grid: are

filled end'icompeeted' a. eubstntially uni foflu-deneity. It iejmportenfi that-i811 tothe some den- ,.e FIotoe-beeom a ure'now slid sldewe ep wi i block-mid pleoed 'u the weather. .Attlfi 'ng. may

of de dupohfthe'fetztorshf After the dryihgperiod hesfpessed, the plafesflare slowly m1- mersed ih a sulphuricmid solution, specific gravity 1;100 to 1,200, for item niliefio sir been, hours, urging with the size of the 1 late- Afteuthzs-period of immer'sion'hes' pissed, the' plates are taken out and allowed hours' before usin All of the electrodes o re "made by the 'ebo've method,'tihere are no speohil compositions and. that mam.

ey'are the; 'ready fonaseembliiig .gior. 'e .fogning proeess. e The-sulphuric amd of 1.100 to 1.200 spefor positive plates, and different composiphate solutidnoi 1.100 to LMO g. form tions for negative plates. p a paste, pressing the paste into agnd, and A; number of plates are now assembled in sou-km the in'sulphuric acid of 1.100 a. group, and another assembled group-inter to 1'. sp.

laced therewith; the two groups then 1111- 5'. The method of melnngasecondary batmersed in battery acida-nd charged and dis- 'tery electrode, which comprises mixing lead 45,

charged through generally two cycles, and oxids, talc, and lamp black, moistening the then given t final charge. They nevi ere in 'powderedmix with ammonium sulphate sothe oonditionof positives and neg'atives.

luti'onoi. 1.100 vto,1.14:0 sp. g., allow' 'to The number at char cycles may "he stand for vabout five minutes, adding a 1'- increased if desired; 4 A er forming, a suitther quantity of ammonium-sulphate soluable number of-the positites are united by tion and-mixing, pressing the peste' into a a, connecting yoke, end a.lso e suitable uun'igrid, allowing to stand'less than 30 minutes,

and lamp black.

bar of negatives, to constitute a: battery. depending on the size of-t-hegrid andthen After assembling, the "are properly seoled immersing in' sulphuric aci solution for in a'cell,;cherged, an the battery-1s ready from 931:0.16'hours. r for-fuse. a -6= The method of making a secondary We claim:- battery electrode, which com rises mixing 1. A secondary bettery electrode'haviiig lead oxide, tale, and lam l1 aek, moistenactive material containing lead oxide, telc', mg the. n'dered mixfii' fl l 'fl hateso ution of 1.100 to 1.140 sp. g. allowso .2. A secondary'batt ery electrode hzwin mg to stand for about five minutes, adding active materiel-containing 90 to 95% lea. a further uentity of ammonium sulphate -i oxide, from 9 to 4 percent of tale, end, solutionanmixing, pressing the paste into 7 about one per'cent'of lam black. egrid, allowing to stand less than"30 min- -3. The. method-"of 1n a. secondary ntes depending on .the size of the grid; then battery-electrode which comprises mixing immersing in sulphuneacideolutmn for lead oxide, ta lc a-nd lamp black, moisteni'ug irom 9 to 16 hours, then subjecting to e 1 battery electrode'whieh comprises mixing.

ing the powdered m x wit the mix'w-ith ammonium sulphetesolution forming procesa, b y connectingas a. p05;- to form a. paste, pressin thepaste into a tire to form tLPOSit-IVG plete,pr a.s anegative grid, and soaking the gri in sulphuric acid to forn wnegative plate. solutionqp In testimony whereof we hereby aflixour 4. The method 01': making a. secondary signatures.

lead oiiide,- talc, and 1am 1 h aek, moisteny W; iELEIS,.Sn.

' ammon'ium-sul- GEOILGE W. PLEIS,'JB. V 

